There are some sites off of the Survival links sections of ETS,that sell the NO-Rinse Shampoo/Body wash stuff the Space Shuttle Astronauts use,I would like to think that,this stuff would work well as,the Close-Quarters Scenario of the shuttle&Space station.Most of all though,I would Ask The Sheriff,AKA Blast,of whom is an Expert of Chemical Savviness,what would be an Ideal alternative,As per Washing sans Water!Personally,I use Hoo-Ahhs,& they work just fine!They are a bit Heavy per pack,but Much lighter than water!